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nextcloud-docs/admin_manual/configuration_files/file_sharing_configuration.rst
2015-09-17 10:15:35 -07:00

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============
File Sharing
============
ownCloud users can share files with their ownCloud groups and other users on
the same ownCloud server, with ownCloud users on :doc:`other ownCloud servers <federated_cloud_sharing_configuration>`, and create public shares for people who are not
ownCloud users. You have control of a number of user permissions on file shares:
* Allow users to share files
* Allow users to create public shares
* Require a password on public shares
* Allow public uploads to public shares
* Require an expiration date on public share links
* Allow resharing
* Restrict sharing to group members only
* Allow email notifications of new public shares
* Exclude groups from creating shares
Configure your sharing policy on your Admin page in the Sharing section.
.. figure:: images/sharing-files-1.png
* Check ``Allow apps to use the Share API`` to enable users to share files. If
this is not checked, no users can create file shares.
* Check ``Allow users to share via link`` to enable creating public shares for
people who are not ownCloud users via hyperlink.
* Check ``Enforce password protection`` to force users to set a password on all
public share links. This does not apply to local user and group shares.
* Check ``Allow public uploads`` to allow anyone to upload files to
public shares.
* Check ``Allow users to send mail notification for shared files`` to enable
sending notifications from ownCloud. (Your ownCloud server must be configured
to send mail)
* Check ``Set default expiration date`` to set a default expiration date on
public shares.
* Check ``Allow resharing`` to enable users to re-share files shared with them.
* Check ``Restrict users to only share with users in their groups`` to confine
sharing within group memberships.
.. note:: This setting does not apply to the Federated Cloud sharing
feature. If :doc:`Federated Cloud Sharing
<federated_cloud_sharing_configuration>` is
enabled, users can still share items with any users on any instances
(including the one they are on) via a remote share.
* Check ``Allow users to send mail notification for shared files`` enables
users to send an email notification to every ownCloud user that the file is
shared with.
* Check ``Exclude groups from sharing`` to prevent members of specific groups
from creating any file shares in those groups. When you check this, you'll
get a dropdown list of all your groups to choose from. Members of excluded
groups can still receive shares, but not create any
* Check ``Allow username autocompletion in share dialog`` to enable
auto-completion of ownCloud usernames.
Creating Persistent File Shares
-------------------------------
When a user is deleted, their files are also deleted. As you can imagine, this
is a problem if they created file shares that need to be preserved, because
these disappear as well. In ownCloud files are tied to their owners, so
whatever happens to the file owner also happens to the files.
One solution is to create persistent shares for your users. You can retain
ownership of them, or you could create a special user for the purpose of
establishing permanent file shares. Simply create a shared folder in the usual
way, and share it with the users or groups who need to use it. Set the
appropriate permissions on it, and then no matter which users come and go, the
file shares will remain. Because all files added to the share, or edited in it,
automatically become owned by the owner of the share regardless of who adds or
edits them.